Kissinger's Files and Invisible Ink Recipes: CIA Trove Has It All - New York Times

New York Times

Kissinger's Files and Invisible Ink Recipes: CIA Trove Has It All New York Times You can look through intelligence reports on specific countries or events, find recipes for invisible ink or learn how to open sealed letters. “It gives insight into a lot of different elements of our history since the 1940s,” said Mike Best, a ...